Butt gauge



-N w;19,1935. A. FLEMING 2,021,595

' BUTT GAUGE Filed March 6, 1955 IWW Patented Nov. 19, 1935 UNITED STATES PATENT OFFICE 9 Claims.

The present invention relates in general to a door hanging device, and more particularly to a butt gauge for properly positioning and cutting out butt cutouts for reception of butt hinges.

5 It is the common practice, in connection with the use of butt gauges, to require accurate measurement along a door jamb for making the butt cutouts for hinges and also require accurate measurement along the edge of a door or win- 10 dow, as the case may be, for placing the butt cutouts in such door or window. The present practice makes `it necessary for the workman to accurately measure every one of the various cutouts and mark the cutouts with a knife or pencil and then utilize a hammer and chisel to make the butt outlines with the portion dened by such outlines then having to be removed by a chisel.

It is an object of the present invention to provide a butt gauge with cutting blades on it so that it may be hammered into a work piece, such for instance as a door jamb. a door stile, or window stile, which hammering makes the necessary butt outline cuts by hammer blows against the gauge. The gauge of the present invention, therefore, has the cutting blades arranged in proper relation, preferably in rectangular formation, to make accurate and clean butt outlines whereby a better t is secured with the hinges.

Another and still further object of the invention is to provide a butt gauge with cutting mem` bers for penetrating a work piece to outline the butt cutouts, together with means for limiting the depth of penetration.

The above, other, and further objects of the invention will be apparent from the following description, accompanying drawing, and appended claims.

'I'he accompanying drawing illustrates a butt 40 gauge embodying principles of the present invention and the views thereof are as follows:

Figure 1 is a fragmental side elevational view of a door, resting on one edge, with a butt gauge, embodying principles of the present invention,

applied along an edge of a stile for cutting the butt outlines or cutouts.

Figure 2 is a fragmental elevational View of a doorway, with a section through theY lintel,

with a part of a butt gauge, embodying principles of the present invention, applied to a jamb of the doorway for making a butt outline or cutout in the jamb. Y

Figure 3 is an enlarged side elevational view of a fragmental portion of the butt gauge illus,-

55* trated in Figure 1.

Figure 4 is an enlarged fragmental transverse sectional view taken substantially in the plane of line IV-IV of Figures 1 and 3.

Figure 5 is an enlarged vertical sectional View taken substantially in the plane of line V-V of 5 Figure 4.

The drawing will now be explained.

The butt gauge chosen to illustrate and exemplify the present invention is, in the present instance, constructed as a stick designated gen- 10 erally at A made up of a plurality Vof sections I, 2, 3, 4, and 6, which are relatively adjustable one with respect to another, and which stick is shown as supplied with two butt gauges designated at B and C. l5

In Figure l the butt gauge A is shown as ap-v plied along an edge of a stile of a door D, which is shown as resting on the opposite edge, and illustrates the manner of applying the gauge to the edge of a door for cutting the butt outlines 20 for the hinges.

At the outset it is to be observed that the stick A may be supplied with a single cutter, or with two, three, four or five, more or less, as occasion demands, without departing from the spirit and Z5 scope of the present invention.

The various sections of the stick A are shown as secured together by means of bolts. The end sections 4 and 6 are adjustably positioned with respect to the adjacent sections 2 and 3, by means 30 of slots 'l formed in the sections 2 and 3, through which pass the bolts 8 for attaching the end sections to the adjacent sections. The sections 2 and 3 are also slotted in a similar manner to receive the bolts 9 which secure the section I 35 to the sections 2 and 3, to permit relative adjustment as to length of the several sections comprising the stick A.

'I'he extremities of the end sectionsv 4 and 6 are illustrated as bent forming feet I0, which 40 feet are formed preferably in right angular relationship with respect to the end sections 4 and E. Fastened'to the feet I0, that is to a foot I3 at the end vof the section 4 and to the foot y l ll at the end of the section 6, is a guide or spacer 40 II, being fastened by means of a rivet or bolt I2. The extremity of the member I I is reduced in thickness as at I3, the reduction in thickness being preferably on the inner side of this member.

The butt gauges are herein illustrated as consisting of bases,preferably made up of a plurality of blocks I4 and I5. The block I4 is shown as having threaded apertures I6 and Il through it for the reception of bolts I8 and I9 respectively. These bolts pass through suitably disposed 55 apertures 2|) and 2| in some of the sections cornprising the stick. For convenience the butt guide will be described as having the block I4 bolted to the section 2 of the stick. Preferably the heads 22 of the bolts I8 and I9 lie inwardly of the stick, that is toward the work piece, and constitute depth gauges for limiting the penetration of the cutters applied to the blocks 4 and I5.

- Nuts 23 are applied to the ends of the bolts I8 and I9 outwardly of the section 2 of the stick for adjusting the lengths of the bolts within the block for controlling penetration of the cutters.

Attached against one side of the blocks I4 and I5 is a cutter blade 24 sharpened at one edge as at 25. Against one end of the block I4 a cutter blade 26 is applied in rectangular relationship with respect to the blade 24. A third blade 21 is applied against the outer end of the block I5 in right angular relationship with respect to the blade 24. The blades 28 and 21 are similarly sharpened as is blade 24. The blades 24, 26, and 21 are arranged in right angular relationship thus constituting a three sided cutter.

The blade 23 is held against the block I4 by a bolt 28 passing through a suitable aperture in the blade and entering a threaded aperture in the block. The blade 21 is held against the block l5 by a bolt 29 which passes through a suitable aperture in the blade and is threaded in a threaded aperture in the block I5 and also enters a threaded aperture in the adjacent end of the block |4 for connecting together the blocks I4 and I5. The blade 24 is secured against the block I4 by a bolt 30, which passes through a suitable aperture in the blade and engages a threaded aperture in the block |4.

Against the outside of a portion of the blade 24 rests a ller block 3| which is secured by means of a bolt 32 passing through an aperture in the block, the blade 24 and is in threaded engagement with a threaded aperture in the block I4. Against the outer face of the block 3| and between it and the head of the bolt 32 is a guide plate 33 which is adapted to rest against a face of a door stile, when the guide is applied to a door as shown in Figure l or against a door stop 34, when the guide is applied against a jamb of a doorway, as is illustrated in Figure 2. The blocks 3| are interchangeable so that blocks of varying thicknesses may be employed to vary the distance between the guide 33 and the adjacent blade 24 of the butt guides.

Figure 5 shows in dotted lines the replacement of the block I4 by a longer one so as to bring the end cutter 26 farther away from the full line position of this iigure. In this manner the length of the butt cutout or outline may be varied to suit the size of the hinges to be installed. The width of the hinge leaves may be adjusted by changing the filler block 3| and thus varying the distance of the guide 33 with respect to the cutter blade 24.

When it is desired to utilize the butt gauge of the present invention it is applied in the manner illustrated in Figures 1 and 2.

Figure 2 shows the application of the guide against a jamb 35 of a doorway. A lintel 36 is shown in section. The gauge of the present invention is applied against the jamb 35 and the end section, say the section 4 is endwise adjusted so as to bring the cutter C a proper distance below the lintel 36. The gauge is applied with a cutter against the jamb and the member I3, attached to the foot of the end section 6, against the lintel 36. When the gauge has been applied in this manner a few blows of the hammer applied over the guide C will cause the cutters carried thereby to penetrate the wood of the jamb to a distance limited by the depth gauges, such as the bolts I8 and I9. Suppose for instance that the stick A is supplied with three of the cutters then these are struck successively by a hammer or mallet in such manner as to make the proper butt outlines at the designated places.

The term butt outline is herein used to designate the line of cuts, that is the rectangular line of cuts made by the cutter. The term butt cutou is used to denne that portion of the door or jamb material within the butt outline to be subsequently removed by the skiving tool of the present invention, for the reception of the butt hinge.

When the door jamb has been properly marked in the manner described the gauge is then removed and applied along the edge of a stile of the door with the inner face of the member |3 hooked against the extremity of the door, either the top or bottom as the case may be, which thereupon brings the various cutters B and C into proper relationship with the door so that when these are struck by a hammer butt outlines will be made which will register with the ones formed in the door in the manner just described. The thickness of the reduced extremities of the members |3 is made sufficient to provide proper clearance between the ends of the door and the ends of the doorway that is between the ends of the door and the threshhold and lintel of the doorway.

When the gauge is applied to the door jamb the guides 33 rest against the stops 34 and these therefore provide suicient clearance for the door when hung, to prevent binding.

' The butt gauge of the present invention, as will be observed, provides means whereby any number of butt outlines may be made in a work piece, such as a door jamb or door stile, with one adjustment of the gauge, so that where several doors are to be tted to doorways of the same size, one adjustment will suiiice for all. This makes possible the cutting of the cuts in the door jambs and doors in an expeditious manner with extreme accuracy and with the cuts of uniform outline and depth.

After the several butt outlines have been made in the manner described, the butt cutouts are then removed by any suitable tool skiving tool of the present invention.

The invention has herein been described more or less precisely as to details, yet it is to be understood that the invention is not to be limited thereby, as changes may be made in the arrangement and proportion of parts, and equivalents may be substituted, without departing from the spirit and scope of the invention.

The invention is claimed as follows:

1. A cutter for butt hinges including in combination, a rectangular three sided cutter, means for adjustably positioning said cutter with respect to the ends of a door frame and the ends of a door, adjustable means for limiting the depth of penetration of said cutter, and means for positioning said cutter with respect to the door frame stop and side frame of a door for determining the ext-ent of cut inwardly from the door jamb margin and also inwardly from a side face of the door.

2. A butt gauge comprising a body and cutting blades secured to said body in butt outline for penetrating a Work piece to outline the butt cutout, said blades being driven into a Work piece by hammer blows against 'said body, and adjustable means carried by said body for limiting penetration of said blades when said gauge is driven home.

3. A butt gauge comprising a body and cutting blades secured to said body in butt outline for penetrating a Work piece to outline the butt cutout, said blades being driven into a Work piece by hammer blows against said body, and adjustable means carried by said body for limiting penetration of said blades when said gauge is driven home, and means connected to said gauge for positioning it in desired relation to a Work piece.

4. A mortise gauge for butt hinges, including in combination, a. rectangular three sided cutter, means for adjustably positioning said cutter with respect to the ends of a door frame and door, and means adjustably carried by said cutter and adapted to contact the surface being cut for limiting the depth i'penetration of the cutter into said surface.

5. A mortise gauge for butt hinges, including in combination, a rectangular three sided cutter, means for adjustably positioning said cutter with respect to the ends of a door frame and door, and means in threaded engagement with said cutter and adapted to contact the surface being cut for limiting the depth of penetration of the cutter.

6. A mortise gauge for butt hinges, including in combination, a rectangular three side-d cutter, means for adjustablypositioning said cutter with respect to the ends of a door frame and door, and a bolt threaded into said cutter and 5 adapted to engage the surface being cut for limiting the depth of penetration of the cutter.

7. A mortise gauge for butt hinges, including in combination, a rectangular three sided cutter,I means for adjustably positioning said cutter with 10 respect to the ends of a door frame and door,

and means carried by said cutter and adjustable With respect to the same for limiting the depth of penetration of the cutter.

8. A mortise gauge for butt hinges, including 15 in combination, a block, cutting blades mounted thereon with the: cutting edges projecting therefrom a greater distance than the maximum depth of cut, and means threaded into said block' in a direction parallel to the blades and serv- 20 

